Bot leaves the meeting unexpectedly

We are using the AudioVideoPlaybackBot sample and are facing a critical issue. The bot unexpectedly leaves the meeting within few seconds after joining the meeting. After diagnosing the issue further and doing additional logging, we observed a MediaProcessor Shutdown error.

Here is the complete log.

{ "@odata.type": "#microsoft.graph.commsNotifications", "value": [ { "@odata.type": "#microsoft.graph.commsNotification", "changeType": "deleted", "resourceUrl": "/communications/calls/991f6a00-3ba1-4a66-a8c7-1eb95883e641", "resource": "/app/calls/991f6a00-3ba1-4a66-a8c7-1eb95883e641", "resourceData": { "@odata.type": "#microsoft.graph.call", "state": "terminated", "resultInfo": { "@odata.type": "#microsoft.graph.resultInfo", "code": 500, "subcode": 9999, "message": "MediaProcessorShutdown. DiagCode: 500#2019" }, "chatInfo": { "@odata.type": "#microsoft.graph.chatInfo", "threadId": "19:meeting_MGRlMDg4MGMtYzljMS00MTM2LWE4N2UtOWNhYTU4ZTc0YzBh@thread.v2", "messageId": "0" }, "meetingInfo": { "@odata.type": "#microsoft.graph.organizerMeetingInfo", "organizer": { "@odata.type": "#microsoft.graph.identitySet", "user": { "@odata.type": "#microsoft.graph.identity", "id": "a8ba01c7-991e-4cba-af92-3b9800fba6fa", "tenantId": "9e6b730a-3920-4da8-be46-4fde8c59aaa6" } } }, "callChainId": "13decb9e-027b-4ab7-b041-cec616264dda", "id": "991f6a00-3ba1-4a66-a8c7-1eb95883e641", "meetingCapability": { "@odata.type": "#microsoft.graph.meetingCapability", "allowAnonymousUsersToDialOut": false, "autoAdmittedUsers": "everyone", "allowAnonymousUsersToStartMeeting": false, "entryExitNotificationsEnabled": true, "allowRaiseHands": true, "attendeeRestrictions": "UnRestricted", "allowPstnUsersToBypassLobby": true, "lockMeeting": false, "attendeeViewModes": "Default", "stagingRoomEnabled": false, "cartEnabled": false, "refreshCartKey": false } } } ] }

"resultInfo": { "@odata.type": "#microsoft.graph.resultInfo", "code": 500, "subcode": 9999, "message": "MediaProcessorShutdown. DiagCode: 500#2019" }

I looked for the error code and subcode in the documentation, but did not find anything related to it.

Any information on the cause of this issue and a solution would be super helpful.

Start with the AudioVideoPlaybackBot sample and trace its join and media-processing lifecycle against the supplied termination notification, including MediaProcessorShutdown (500/9999, DiagCode 500#2019). Reproduce the early departure if possible and identify a documented cause or concrete sample/configuration fix; done means the bot remains in the meeting and the fix is verified.